So I'm in the process of designing a system similiar to Kal's (electricbrewery.com). Not going to be as 'shiny', but eh.
i have two questions:
I installed a 30 amp GFCI breaker in my panel the other day, and hooked it up to a 4-wire dryer plug. Seems all good, voltage tests out dead on at 240, etc. However, when I push the test button the breaker nothing happens. I assumed it would 'pop' , like a regular GFCI plug in a bathroom. Am I missing something here? does there need to be a load on the circuit, or do I have a bum breaker??
As well, I notice that it LOOKS like Kal is using a ground with his 2 240 hot wire to his boil kettle. However, doesn't the GFCI measure the relationship between the neutral and the hot wire? so, don't you need to use the neural instead of ground, to make the GFCI effective?
<<P.S. I am going to have two electrical engineer friends check over my diagram and help with building the unit, I have no intention of killing myself >>